Adding TextureAlpha material variable

rumblesan · Apr 23, 2021 · 7ce70bb · 7ce70bb
1 parent c8183b8
commit 7ce70bb
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Showing 3 changed files with 9 additions and 1 deletion.
diff --git a/examples/texture.pz b/examples/texture.pz
@@ -1,3 +1,4 @@
+materialVar(:TextureAlpha, 0.5)
 background(155, 0, 0)
 noStroke()
 rotate()

diff --git a/materials/config.yaml b/materials/config.yaml
@@ -18,3 +18,5 @@ materials:
 defaults:
   - name: StrokeSize
     value: 0.08
+  - name: TextureAlpha
+    value: 1.0
diff --git a/materials/texture.yaml b/materials/texture.yaml
@@ -20,9 +20,14 @@ fragmentShader: |
   in vec2 Texcoord;
 
   uniform sampler2D Texture;
+  uniform float TextureAlpha;
 
+  vec4 textureColours;
+  float alpha;
   out vec4 finalColour;
 
   void main() {
-      finalColour = texture(Texture, Texcoord);
+      textureColours = texture(Texture, Texcoord);
+      alpha = textureColours.a;
+      finalColour = vec4(textureColours.rgb, alpha * TextureAlpha);
   }